As it is often portrayed in various media, it means nothing to me. It smacks of frivolous, material pursuits, artificiality, skewed perceptions of what’s important. A self-involved, distracted life, a neverending exercise in futility, or dominance.
On the other hand, I’ve heard people gush that they feel like they have it all when they get a clean bill of health or realize somebody loves them. So, it might be attainable in a subjective, personal way, as a matter of opinion.
More a feeling than a measurable standard.